State sheet · CO
Tier II reporting requirements in Colorado
- Deadline
- 1 March, yearly
- Takes our file
- Yes
- Own thresholds
- No — federal
- Fee
- $10 + $10 each
- Filing route read
- 2026-09-07
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How Colorado takes it
Colorado collects the file through its own AccessGov platform rather than a plain upload page.
Colorado charges $10 for the facility plus $10 for each Tier II chemical over a threshold. The cap is $1,000 for any one organisation across all its Colorado sites. Farms under NAICS 111–115 pay nothing, though they still file.
The file we build is the one this state works from.
The filing is due 1 March each year and covers the calendar year before it. Colorado passes it on for you — one submission covers all three. Worth a call to your county, though: a few run their own list on top.
Before you send it — what else Colorado asks for
Colorado adds one field, one clock detail and one thing you may not have to do. The field: “Colorado requires businesses to include their Dun and Bradstreet Number on their Tier II report” — get one before you start if you do not have it (local, state and federal government entities and universities are excused). The clock: the deadline is not just the date, it is “5:00 p.m. (MST) on March 1 each year.” And the thing you may be able to skip: CDPHE says facilities “are not required to provide the same report to the local emergency planning committee (LEPC) or the local fire department unless those agencies maintain local reporting requirements,” so check with yours rather than assuming you owe them a copy.
Does Colorado set its own limits?
Colorado's own agency says it uses the federal thresholds, and we read that page rather than assuming it. We have not gone behind it to the state code, so we say that too.
Colorado runs a single-point submission — you do not send the same report separately to the LEPC or the fire department.
The words we read
Colorado CDPHE, Tier II reporting: “EPCRA Sections 311/312 require the submission of a Tier II form for the storage of hazardous chemicals that exceed federal thresholds.”
Where we read this
- Colorado Department of Public Health and Environment, “Tier II hazardous chemical inventory reporting” (cdphe.colorado.gov/dehs/sustainability/sara-title-iii/tier-ii), read 2026-09-06 and 2026-09-07: “All Tier II reporters create their facility’s report in the EPA’s newest version of the Tier2 Submit software.” · “export your report as a .T2S file … Complete the Tier II submittal form and attach your .T2S file from Tier2 Submit”. · “Email submissions will NOT be accepted. The deadline for report submission is 5:00 p.m. (MST) on March 1 each year.”Same page, on local copies — the reason we say you file once: “Facilities are not required to provide the same report to the local emergency planning committee (LEPC) or the local fire department unless those agencies maintain local reporting requirements. Please check with your LEPC and fire department for local requirements.”Same page, on the extra field: “Colorado requires businesses to include their Dun and Bradstreet Number on their Tier II report. Colorado does not require a Dun and Bradstreet Number for local, state, or federal government entities or universities.”Checked 2026-09-07
- Colorado CDPHE, Tier II reporting: “EPCRA Sections 311/312 require the submission of a Tier II form for the storage of hazardous chemicals that exceed federal thresholds.”State guidance — the code wins where they differ
- Colorado’s own Tier II pageWe can be right today and the state can change tomorrow. This link does not go stale.
If something here is wrong, the checker has a way to tell us on every answer screen. We would rather be corrected than confident.
Find out whether you have to file
Tell us what you keep on site and we work it out against the federal list and Colorado’s own rules, showing the regulation behind every number.
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